Combined erasing, blotting, and eraser cleaning implement



A ril 7, 1353 c. E. THOMPSON 2,533,829

COMBINED ERASING, BLOTTING, AND ERASER CLEANING IMPLEMENT Filed NOV. 30,1950 CLARENCE A/IPSON INVENTOR.

Z i Z ATTORNE'I.

Patented Apr. 7, 1953 S PATENT- OFFICE COMBINED ERASING, BLOTTING, ANDERASER CLEANING IMPLEMENT Clarence Earl Thompson, Los Angelcs, Calif.Application November 30, 1950, Serial No. 198,328

4 Claims.

. My invention relates to a combined erasing, blotting and erasercleaning implement inwhich the combinative whole contributes to theunitary result of making an erasure in a quicker, simpler,

cheaper and neater manner.

Take for example the typist. When a typographical error is made it mustbe corrected. Certain problems present themselves when this operation isto be performed. It should be done as quickly as possible which isunderstandable.

It should be done meticulously, in order not to disclose the awarenessof the mistake. It should be painstakingly performed so as not to mar orpuncture onion skin carbon copies which are not only delicate in texturebut also very easy to smudge. In order to expedite the operation thereis needed first the blotter to remove excess carbon and/or ink, a cleaneraser to perform the erasing operation and means to clean the eraserincident to a repeat erasing operation.

' In so far as I have been able to ascertain by careful research noimplement has as yet been improvised which gives to the typist or thewriter and draftsman an article which through its use securesthe pluraladvantages of obviating the numerous disadvantages occurring through thelemployment of present day erasing, cleaning and blottin devices.

Accordingly, important objects of the invention are:

" To provide a novel and improved combination "of eraser, eraser cleanerand blotter; a new and i more efficient means for cleaning the eraserafter the same becomes soiled; and a new and improved mode of assemblingthe eraser in relation to the eraser;

To provide a typists accessory which is easier to manufacture, that isto say, provide a device having a minimum of separate parts andinvolving less cost in their assembly;

To provide an inexpensive article which may be retailed within a fewcents of conventional 'erasers now provided, one having greaterlongevity due to the fact that it need not be discarded after partialuse on account of being out of shape or ingrained with dirt;

To provide an article of the above stated kind capable of greatervariety of uses and an article whereintherpressure of the eraser cleanerunit may be regulated to cover greater or less areas to be .cleaned asdesired, and wherein the clean- ;ing elements (i. e. bristles) arealways maintained alive throughout their period of use in order furthernot to contaminate a slightly discolored eraser; and g To provide a onepiece sheet metal combined -wa1l of the aforesaid holder 9, and beingadapted to form a guide for a manually graspable curl 25 carried by thesheet metal sheath 26 which grips the handle of bristles 21 of theaforesaid cleaner l0. Sheath 2B is surrounded transversely by an 2mounting and handle means which in its completed form has a wall withinterlocking edge portions that stabilize it against being strained outof shape during use.

Still other objects, advantages and features of the invention willhereinafter appear.

Referring to the accompanying drawing wherein is shown an embodiment ofthe invention now deemed preferable,

Fig. 1 is a side elevation of a combined eraser, eraser cleaner andblotter, embodying my new device, parts being broken away to discloseunderlying structure.

Fig. 2 is an exploded view of the several parts, shown in perspective.

Fig. 3 is an enlarged, longitudinal mid-section .of the eraser cleanerper se.

Fig. 4 is an expanded view of the blank for the body portion of thedevice.

Fig. 5 is a perspective view of the body portion of the device ready foruse, one wing thereof being turned back to illustrate the joint seam.

Fig. 6 is a perspective view of the blotting member per se, a portion ofthe spirally wrapped paper strip being turned back to further disclosesaid blotting member.

Fig. 7 is a cross section on line 7-1 of Fig. 1.

Referring in detail to the drawing therein is shown, in assembly in Fig.l, the principal parts comprising the invention, namely, theconventional circular eraser 8, the body 9, on which said eraser isrotatably mounted and in which i adjustably housed the eraser cleaner inand blot- 40f rectangularly formed part being shown in Fig. 2.

In the blank construction shown in Fig. 4, it will be seen that theblank is constructed so as to provide ears l3 and M, said ears, in themodeled or shaped-up form being adapted to provide a bifurcation betweenthe branches of which the eraser 8 is rotatably-held on a tubular rivetpin IS, a washer it being provided to overlie each side of the eraseragainst which the inside face of an ear abuts.

In the completed article a longitudinal slot 20 (see Figs. 2 and 4) isprovided through one side member has been applied.

indented groove 28 whose convexity causes the bundle of bristles to beheld securely in place. Said sheath is put into place by advancing itbetween the ears I3, 14 in a tilted manner until said curl passes underthe bridge 29, whereupon said sheath may be brought to the slidablepositionshown in Fig. 1. Saidbristle bundle is shown having its-cleaningor applicator endportion (see Fig. 2) as a-rcuate at 21a in a verticalmanner and at 2119 in a horizontal manner, to correspond, respectivelyto circumferential and transverse curvatures of the eraser 8. Thehorizont-ally arcuat-e feature increases the width of eraser surfacecleaned by the bristles.

Returning to the aforesaid blottingmember II, this member is desirablymade of a plastic clay with a rubber base which is a kneadable clayadapted to absorb typing carbon, thus facilitating the erasing operationand leaving a less smutchy appearance. Alsoit absorbsexc'ess suring astop-which prevents separation of said clip from the holder 9. Said slot33 has a series of enlargements resulting from oppositely disposedarcuate notches 33a.

From Fig. 7 it will be-seen that the curl 32 has a contracted neckportion 34 which" is narrow enough to glide" freely along all portionsof the slot 33 the outer end portion of said curl being too large topass through said slot except where the latter" is widened by theaforesaid arcuate notches 33a.

Preparatory to' putting the blotting member l l and clip 35 into place,one end of said blotting member" is wedged in between the arms of saidclip (the latter being resilient), and then the clip is inserted intothe end of the member 9 with the ear 3'2 directed toward the slottedside of said member, until said ear abuts the end of said member.Thereupon the ear carrying flange of the clip is. sprung inwardly untilthe ear can be ,moved. into the member 9, this being done thus bringingsaid ear into alinement with. the outer part of the slot 33 and allowingit to spring out through the widened outer end portion of said slot, itbeing understood that the elastic material of which the blotting memberis composed is sufficiently compressible to allow this to be done.

By preference as shown. the blank- [2 is provided along one long edgewith a plurality of triangular projections 35 and along its oppositeedge with corresponding triangular recesses 36. When said blank has beenshaped up so as to form the body 9 said points are nested into saidrecesses thus interlocking the edge portions of theblank, so that-astable handle forming structure results, even though no fastening meansis used to secure said edge portions to each other.

In operating the deviceupon'typed matter the typist will use the holderor body 9 as a handle means with which firstto' apply to typing to beerased the blotting member II and thereafter the eraser 8 to erasefromthe page being typed the typing, on the area to which said blottingIn applying said blotting member the typist will press a finger or thumbtoward the right (viewing Fig. 1) against the curl 32 when that isnecessary to cause the outer end of a worn down bar H to project fromthe member 9. Depressing the thicker outer end portion of the curl intothe selected widened portion of the slot will enable the operator moreconveniently to prevent the retraction of the blotting member whileinuse.-

Whenever, by reason of use, the eraser 8 becomes soiled, the typist, inorder to clean it, will rotate it with one hand while using the otherhand gentlyto press the bristle bundle 21 against its periphery, thelatter operation being performed by pressing the thumb or finger againstthe back side of the curl 25.

In using the eraser cleaning bundle of bristles the operator will applythe bristle ends to the eraser 8' with more or less pressure dependingupon the substance and amount of dlscoloring material to-be removed byrotating said eraser over the applied bristles, thus cleaning it with abrushing or sweeping action, the bristles being bendable enough tocreate more effective cleaning area and to provide the brushing orsweeping action desired.

I'claim:

1. In an eraser, an elongated handle forming member, a circular eraserelement rotatably mounted on one end of said handle member, a tubularholder fitted to slide longitudinallyina tubular slotted end part ofsaid handle member, a projection fixed on said holder projecting throughthe slot in said handle member; and a multiplicity of brush formingbristlesfixed in said holder with ends of the bristles projecting froman end of the holder toward the eraser so that the ends of the bristlesare adapted tobe pressed against the periphery of the eraser by manualmovement of the-projection on the holder.

2. An eraser a's'claimed in claim 1 wherein the eraser contacting endsof said bristles form a concavity conforming to the circumferential andtransverse curvatureof'the'peripheryof'the eraser element.

3. An eraser as claimed in claim I wherein said bristle holder is formedwith an indented groove to tightly compress the bristles the holder.

v 4. An eraser as claimed in claim 2 wherein said handle member isformedfrom a unitary sheet bent to provide a tubular handle and having a pairof complementary integral ears extending longitudinally fromoneendof thetubularhandle, and a disk shaped eraser rotatably mounted between saidears with the bristles slidable radially of the eraser and completelycontacting the edge and adjacent marginal portion of the eraser.

CLARENCE E'ARLL THOMPSON;

REFERENCES CITED The following references are" of record in the fileofthis patent:

UNITED STATES PATENTS Name Date Lattimore l Sept. 28; 1897 Veit n Aug.-'Z,- I906 l-Iarisen Mar. 26', I918 Hartline Jan. 30, I923 Number2,207,296 Lee July' 9-, 1-940 Number MbrcOm- Oct. 31, 1939

